Abstract
The results of a study of the physicochemical properties of N- (2-hydroxybenzoyl) -N '- (p-tosyl) hydrazine (GBSH) are presented. The solubility of the reagent in ethanol, 0.1 mol / L KOH solution, toluene, chloroform, hexane was studied by spectrophotometry, refractometry, and gravimetry. Based on the results obtained, it was shown that GBSG can be used in the processes of flotation and extraction. Acid-base equilibria in reagent solutions were studied spectrophotometrically. The obtained values of the acid dissociation constants (pKa1 = 7.93 ± 0.34; pKa2 = 10.48 ± 0.15) prove that GBSH is a weak diacid. The hydrolytic stability of the reagent was studied by the spectrophotometric method. The results of the study showed that HBHS solutions are sufficiently stable over time in alkaline media: the degree of hydrolysis within two hours is 2.35%. The surface activity of the reagent was determined by the stalagmometric method. It has been established that GBSG is a surfactant.
Highlights
PHYSICO-CHEMICAL PROPERTIES OF N- (2-HYDROXYBENZOYL) -N '- (p-TOSIL) HYDRAZINE The results of a study of the physicochemical properties of N- (2-hydroxybenzoyl) -N '- (p-tosyl) hydrazine (GBSH) are presented
hexane was studied by spectrophotometry
it was shown that GBSG can be used in the processes
Summary
ФИЗИКО-ХИМИЧЕСКИЕ СВОЙСТВА N-(2-ГИДРОКСИБЕНЗОИЛ)-N'-(п-ТОЗИЛ)ГИДРАЗИНА Представлены результаты исследования физико-химических свойств N-(2-гидроксибензоил)N'-(п-тозил)гидразина (ГБСГ). PHYSICO-CHEMICAL PROPERTIES OF N- (2-HYDROXYBENZOYL) -N '- (p-TOSIL) HYDRAZINE The results of a study of the physicochemical properties of N- (2-hydroxybenzoyl) -N '- (p-tosyl) hydrazine (GBSH) are presented. The solubility of the reagent in ethanol, 0.1 mol / L KOH solution, toluene, chloroform, hexane was studied by spectrophotometry, refractometry, and gravimetry. Acid-base equilibria in reagent solutions were studied spectrophotometrically. The hydrolytic stability of the reagent was studied by the spectrophotometric method. Авторами [4] изучены физико-химические свойства представителя исследуемого ряда N-. Гидразина (НППТ), необходимые для оценки возможности применения реагента в процессах концентрирования ионов цветных металлов, в частности, экстракции и флотации. С сотрудниками [5] изучены физико-химические свойства ацилсульфонилгидразинов общей формулой (1):. N'-(п-тозил)гидразина (ГБСГ) с целью определения возможности применения реагента в процессах концентрирования цветных металлов.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Вестник Пермского университета. Серия «Химия» = Bulletin of Perm University. CHEMISTRY
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
